Recs.
Updated
SpecsUpdate
Pros
Pro Customizable look and feel
MusicBee can be skinned which can significantly change the appearance of a player.
To apply a skin, it must first be downloaded, moved to the appropriate folder, and after restarting MusicBee, it can be applied. A collection of skins can be found here. It's also possible to customize the layout by choosing which panels to display.
Pro Remarkably responsive interface with small to medium numbers of files
Your media library is stored in a flat file rather than a traditional database, limiting its ability to manage truly massive collections of audio files, but offering far reduced processing overhead for small to medium-large collections.
Pro Runs well under WINE in Linux environments
There are detailed instructions in the community forum describing how to create a suitable WINE prefix in which to install MusicBee with nearly all the features operating as they do in Windows. There is also support for Linux using CrossOver by CodeWeavers, who offer an automated installer to accomplish the same result on nearly all major Linux distributions as well as Google's ChromeOS.